CloudDS - RCU access

// Update operation
for (;;) 
{ 
 	struct Ring *const cur = theRing, *const n = cur->Clone(); 
  
  	n->Update(…);
  	n->AnotherUpdate(...);
  	
  	if (cas(&theRing, cur, n)) 
  	{ 
    		Autorelease(cur); 
    		break; 
  	} 
  	else
    		n->Release()
}

// Read operations access theRing directly; no need to lock
// If a read operation can potentially take too long, we can retain and release it just to be on the safe side, like so:
struct Ring *const r = theRing;

r->Retain();
// Do something that takes too long
r->Release();